DS1244YP-70 データシートの表示（PDF） - Maxim Integrated
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DS1244YP-70 Datasheet PDF : 20 Pages
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DS1244/DS1244P
DC ELECTRICAL CHARACTERISTICS
PARAMETER
1B
Input Leakage Current
I/O Leakage Current
CE ≥ VIH ≤ VCC
Output Current at 2.4V
Output Current at 0.4V
Standby Current CE = 2.2V
Standby Current
CE = VCC - 0.5V
Operating Current tCYC = 70ns
Write Protection Voltage
Battery Switchover Voltage
SYMBOL
IIL
IIO
IOH
IOL
ICCS1
ICCS2
ICC01
VPF
VSO
MIN
-1.0
-1.0
-1.0
2.0
2.80
Over the operating range (3.3V)
TYP
MAX UNITS NOTES
+1.0
µA
12
+1.0
µA
mA
mA
5
7
mA
2.0
3.0
mA
50
mA
2.86
2.97
V
11
VBAT or VPF
V
11
8B
CAPACITANCE
PARAMETER
2B
Input Capacitance
Input/Output Capacitance
SYMBOL
CIN
CI/O
MIN
TYP
5
5
MAX
10
10
(TA = +25°C)
UNITS
pF
pF
NOTES
MEMORY AC ELECTRICAL CHARACTERISTICS Over the operating range (5V)
PARAMETER
Read Cycle Time
Access Time
OE to Output Valid
CE to Output Valid
OE or CE to Output Active
Output High-Z from Deselection
Output Hold from Address Change
Write Cycle Time
Write Pulse Width
Address Setup Time
Write Recovery Time
Output High-Z from WE
Output Active from WE
Data Setup Time
Data Hold Time from WE
SYMBOL
tRC
tACC
tOE
tCO
tCOE
tOD
tOH
tWC
tWP
tAW
tWR
tODW
tOEW
tDS
tDH
DS1244Y-70
9B
MIN
10B
MAX
1B
70
70
35
70
5
25
5
70
50
0
0
25
5
30
5
UNITS
3B
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
4B
5
5
3
5
5
4
4
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